Errata List for "Computational Discrete Mathematics: Combinatorics and
Graph Theory with Mathematica" by Pemmaraju and Skiena
Last addition: September 21, 2015
See http://www.cs.uiowa.edu/~sriram/Combinatorica/knownBugs for the
Official Combinatorica bugs list.
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Page 57: NextPermutation function: the variable t is unused.